If your trailer is the Scotsman in your profile, you might consider a trailer dolly.
Trailer dolliesI have the 600 lb, item 143754. And move a 2000 lb plus pop up with it. The trailer in your profile should be movable withit.
Just make sure the tires are fully inflated and you don't fold the tongue jack up. Leave it raised up enough so the wheel doesn't contact the ground while moving it. I folded the jack up on the the pop up and slipped in mud while moving the trailer once. The ball slipped out of the coupler when I fell and the handle flipped up. Some friends helped me lift the trailer tongue to set it back on the dolly ball. Never moved it again without the leaving the tongue jack in place.